Keep It Down Guys, I've Had A Ruff Night

Do you answer? What does he do if you answer the door?

Nope, he knocks like three times and leaves, I don't even have time to open the door

Scream "WHO'S THERE" as fast and loud as you can when he knocks. It will trick his mind into thinking he is telling a knockknock joke and feel obliged to stay and answer.

Fuck that I'm not answering the door